20115920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22859}}^1$

素因数の和:22883

約数の個数: 40

約数和(自身を含む): 51023520

約数和(自身を除く): 30907600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22859, 45718, 91436, 114295, 182872, 228590, 251449, 365744, 457180, 502898, 914360, 1005796, 1257245, 1828720, 2011592, 2514490, 4023184, 5028980, 10057960, 20115920]

約数ペア:

[(1, 20115920), (2, 10057960), (4, 5028980), (5, 4023184), (8, 2514490), (10, 2011592), (11, 1828720), (16, 1257245), (20, 1005796), (22, 914360), (40, 502898), (44, 457180), (55, 365744), (80, 251449), (88, 228590), (110, 182872), (176, 114295), (220, 91436), (440, 45718), (880, 22859)]